//#include<iostream>
//using namespace std;
//int compare = 10;
//
//void exchage(int&);
//
//int main()
//{
//	while (compare-- > 0)
//		cout << "main is voked.\n";
//	exchage(compare);
//	if (compare == 100)
//		cout << "compare is exchage." << endl;
//
//	return 0;
//}

